Spinning spool for winding up fresh spun artificial silk



March 24, 1942. y T, ER 2,277,224

SPINNING SPOOL FOR WINDING UP 'FRESH SPUN ARTIFICIAL SILK Filed Sept; 5, 1958 INVENTOR. fine-000R GR use.

BY W1 Patented Mar. 24, 1942 SPINNING SPOOL FOR WINDING UP FRESH SPUN ARTIFICIAL SILK Theodor Grauer, Horn, Thurgau, Switzerland Application September 3, 1938, Serial No. 228,428 In Switzerland September 9, 1937 Claims.

Artificial silk and similar materials which are spun according to the so called parallel or spoolspinning method, are generally wound on rigid, cylindrical bodies or spools. If the spinning material must be disacidulated and washed, eventually dissulphun'zed, such spools are provided with a great number of apertures for the passage of finishing liquids, but since said apertures do not extend to the borders of the spool, the finishing liquid cannot escape freely through the apertures.

Bored out or perforated rigid spinning spools with bilateral more or less expanding borders be tween which the artificial silk thread is wound on, are also known. Such spools do not, however, furnish shrinked-out silk. In order to realize this goal, spinning spools with laterally expanding borders have been constructed, which have been traversed by radially movable rods, supported by circular formed springs; said rods can be loosened and moved inwardly in order to allow the subsequent finishing treatment. This form of embodiment has a resemblance to the spinning spool according to the present invention with regard to washing effect and to capacity of receiving material. It is, however, more complicated, more heavy compared to the receiving capacity and considerably more expensive. Compared to the ordinary, rigid, perforated spinning spool with or without borders, the present spool shows, however, the great advantage of better permeability with respect to the finishing liquid and the drying air. In perforated spools the apertures can at best represent 4 of the square dimension covered by the artificial silk, otherwise the resistance falls below the admissible limit, while in the present spool at least of the silk cake covers the freely accessible space. Owing to this intensive permeability the spool may support at equal dimensions and at equal weight much more material and assures thus a greater economy. In absence of the great number of apertures necessary and in use in the known spinning spools, it is less expensive and allows for its fabrication the use of artificial compositions, artificial resin etc. which saves repeated varnishing. The spinning spool according to this invention allows also an easy removing of waste or rests, inevitable after the twining or twisting silk on the spools.

The accompanying drawing shows examples of realizing the invention:

Fig. 1 is an end view of one half of a spool made in accordance with the invention.

Fig. 2 shows a transverse section thereof taken along line 22 of Fig. 4.

Fig. 3 is an elevational view of one half of the spool illustrated-in Fig. 1.

Fig. 4 is a longitudinal sectional view taken along line 4-4 of Fig. 2; and

Fig. 5 is a view similar to Fig. 4 showing a modified embodiment of this invention.

Figs. 1 to 3 discloses grooves l, which characterize the hollow body' of the spool. These grooves are closed towards the inner face of the spool by a mantle 2 (see Figs. 2 and 4).

Fig. 2 is a transverse section taken along line 22 of Fig. 4, while the latter is a longitudinal section according to line 4-4 of Fig. 2. The grooves l above the mantle 2 may extend from border 3 to the opposite border 4 of the spool and preferably. run freely at .thel front side thereof into borders 3, 4 with which they communicate.

According to Fig. 3 the grooves I run between spaced and parallel bars 6 from one front side to the other of said spool and said bars 6 are in no way interconnected other than at the flanged borders with which they are integral as at 1 and forming channels 8 therewith. These borders may have a different form, for instance their opposite side may run parallel the one to the other, but the respective sides are inclined obliquely. The sleeve of artificial silk will be located between said borders running from the one border to the other, and the silk cake II can be exposed from every side to the liquid or the drying air.

Another embodiment is shown in Fig. 5, wherein the longitudinal and parallel bars 6 disposed at the central body of the spool are connected to the inner mantle 2a forming grooves l'between said bars 6 and the outer face of said mantle 2a. The length of this mantle 2a has not the same extent as the spool itself; therefore it terminates short of the border 3a (Fig. 5); the elongated and open slots I a extending from the ends of mantle 2a toward the borders communicate radially with the inner face of the spool and extend in axial direction into the flanged borders of said spool, as at 8a forming channel means therewith.

This construction permits the liquid and dry air to intimately contact the cake in the most favorable manner, since the grooved portion l, slots or passages la and channel means 8a in the borders are in communication with one another.

The said passages, channels, bars, grooves or flutes instead of being parallel to the longitudinal axis of the spool, can also run spirally or wormlike at least along a part of the mantle of the spool; the effect obtained by such construction being quite the same.

Any suitable material may be selected for the construction of the spools, which may also be molded from artificial substances. Special steel or aluminum blades may also be employed.

The above mentioned spiral form of winding of the grooves or bars has not been shown on the drawing, but is evident to those skilled in the art.

From the above it can thus be seen, that there has been provided a spinning spool of the character described comprising a hollow central body, a flanged lateral border at each end of said central body, and channel means provided at the inner face of each of said lateral borders and extending lengthwise thereof, said central body comprising a portion having parallel grooves at the outside of said central body and a cylindrical portion forming the base of said grooves provided at the inside face of said central body, said cylindrical portion and said grooved portion being co-extensive with each other, said channel means being in registry with said grooved portion.

Having thus described the nature of the invention what is claimed as new and desired to be secured by Letters Patent is:

1. A spinning spool comprising an elongated central hollow body, a flange at each end of said body, spacedly arranged parallel bars extending substantially from one to the other of said flanges, and a mantle extending along at least a part of said central body and constituting the base of troughs formed by said bars and the outer face of said mantle, the inner face of said mantle forming the inside surface of said hollow body, said flanges including channel means and passages extending from said channel means towards said troughs and being in registry therewith.

2. A spinning spool comprising lateral flanged ends, and an elongated central hollow body extending between said ends, said body being provided with a grooved portion and slots between said grooved portions and said ends, and channel portions in said flanged ends and in registry with said slots.

3. A spinning spool comprising lateral flanged ends, and an elongated central hollow body, said central body including an intermediate longitudinally grooved portion and slots substantially extending between said grooved portion and each end.

4. A spinning spool comprising an elongated central hollow body, a flanged lateral border at each end of said central body, said body comprising a cylindrical portion forming the inside surface of said central body and parallel grooves at the outside surface of said central body, said cylindrical portion and said grooves being coextensive with each other, and channel means provided in the inside surface of said borders, respectively, and extending into slots forming extensions of said grooves, said slots terminating short of the outside surface of said borders, respectively.

5. A spinning spool comprising an elongated central hollow body, a flange at each end of said body, and channel means provided at the inner face of each of said flanges and extending lengthwise thereof, said central body having parallel grooves at the outer surface and passages between the extremities of said grooves and said channel means.

THEODOR GRAUER. 

